@misc{indiciaefa03c1386531,
  title = {Breathing difficulty: changes in respiratory function.},
  author = {P J Haylock},
  year = {1987},
  doi = {10.1016/s0749-2081(87)80021-9},
  url = {https://pubmed.ncbi.nlm.nih.gov/3321275/},
  note = {Source identifier: 3321275}
}